My turntable has a built-in phono preamp. How do I connect it to the BOX X2?

• If the turntable has a built-in phono preamp, switch it to "Line Out" mode and connect it to the 3.5mm input on the BOX X2. • If the turntable is set to "Phono" mode, connect it to the MM input on the BOX X2 for optimal sound.

Does the BOX X2 have any built-in tone control? Dose the BOX X2 have bluetooth?

No. The BOX X2 don't have bluetooth. And the BOX X2 features gain control, not tone control. For enhanced tonal shaping, consider using models like BOX X4, which includes treble and bass adjustments. For bluetooth consider using models like BOX X3.

How to connect a turntable to the BOX X2 and active speakers?

Make sure the turntable has a Phono output with an MM cartridge. Some turntables have a built-in phono preamplifier, set it to Phono switch.

Can I replace the tubes in the BOX X2?

You can substitute with 7-pin tubes such as 6AK5, 6AK5W, 6Zh1P, 6J1, and 6J1P. These can also directly replace WE-403A, WE-403B, EF95, 6A2 tubes, 5725w tubes and standard 5654 tubes.

Turntable has built-in preamp/line switch—Can I still use this instead of my built-in preamp?

Yes, deselect the preamp on your turntable. Note: Please confirm whether your turntable has a built-in phono preamp, if there is a phono preamp, and it cannot be deselected, then you can only connect 3.5 mm input, can not connect MM Turntable input.

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Box X2 Phono Preamp for Turntable Preamplifier MM Phonograph Preamplifier with Gain Gear Mini Hi-Fi Stereo Audio Pre-Amplifier for Record Player

Product ID: 467818832

Details

Item dimensions L x W x H
11.8 x 9.8 x
Manufacturer
Fosi Audio
Maximum supply voltage
12 Volts (DC)
Minimum supply voltage
12 Volts (DC)
Voltage
12 Volts (DC)

💡Replaceable vacuum tubes

🔊≥98dB SNR, ≤0.1% THD

🎚️3 gain modes (39/42/45 dB)

HK$1110

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Description

🎵 Elevate your vinyl vibe—because your records deserve the spotlight.

COMPACT STYLISH - Sleek minimalist design fits effortlessly into any workspace or home audio setup.
VINTAGE MEETS MODERN - Replaceable vacuum tubes let you DIY your sound—from smooth warmth to bright clarity.
VERSATILE CONNECTIVITY - Supports MM phono turntables plus 3.5mm AUX input for seamless multi-device integration.
AUDIOPHILE GRADE CLARITY - Low-noise circuitry delivers crystal-clear, warm analog sound with minimal distortion.
CUSTOMIZABLE GAIN CONTROL - Switch between 39, 42, and 45 dB gain for perfect sound tailoring.

The Fosi Audio Box X2 is a premium tube MM phono preamp designed to transform your vinyl listening experience with low-noise, high-fidelity amplification. Featuring three switchable gain modes (39, 42, 45 dB), a 3.5mm AUX input, and replaceable vacuum tubes, it offers customizable sound tailored to any setup. Its compact, elegant design and audiophile-grade components ensure warm, clear audio compatible with most MM turntables, making it a must-have for discerning vinyl enthusiasts.

Specifications

ASIN	B07XNTHHBP
Best Sellers Rank	#19,403 in Electronics ( See Top 100 in Electronics ) #4 in Home Audio Preamplifiers
Brand	Fosi Audio
Customer Reviews	4.5 out of 5 stars 3,276 Reviews
Item Weight	308 g
Manufacturer	Fosi Audio
Mfr Part Number	Box X2
Model Number	BoxX2

Reviews

J**Y

Opened up the sound

This perform better than the inbuilt phono stage of the turntable or the onkyo receiver. The voice is warm and pleasent. A good stylus with the phono preamp is a must if you have a turntable.

21.09.2024

M**S

Works fine but power adapter not suited for UAE

This item does the job with my record player (Fluance RT85) however one little gripe is that the plus is not suitable for UAE/UK - it is a 2 pin plug. It is on the product page as an image (not text) but after some scrolling - would help if its in title description. Small gripe to an otherwise great product.

22.06.2024

M**B

De buizen goed aandrukken als je andere buizen monteert

6.06.2026

A**E

Muito bom!!

Dei mais pontecia na minha agulha!top

2.06.2025

T**E

Très bon

Déjà le poids de l'appareil donne une impression de qualité, mais se confirme à l'utilisation, amplification réglable,son très bon, pas de souffle ou bourdonnement, parfait pour moi.

5.05.2026

P**R

Too Good To Be True For The Price

This Preamplifier is amazingly good for the price and compares favourably when compared to my €1,500 Preamplifier. Appears too good to be true for the price, but it delivers clean smooth musical sound with zero gain noise.

23.01.2026

J**A

Robi różnicę na tle wbudowanego wzmacniacza.

Na tle wzmacniacza wbudowanego w gramofonie robi wielką różnicę, a samo pokrętło chodzi bardzo przyjemnie . Mała rzecz a cieszy.

14.06.2026

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TrustScore 4.5 | 7,300+ reviews

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The product exactly matches the description. Very satisfied with my purchase.

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2 weeks ago

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HK$1110

Duties & taxes included

In stock

Sold byAmazon Hong KongDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Hong Kong.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

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Very impressed with the quality and fast delivery. Will shop here again.

4 days ago

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The delivery time was excellent, and the packaging was secure.

2 months ago

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